RE: broad heads or mechanical?
Well, any bow, compound, recurve, or longbow or even crossbow, less winged area on the front will make it fly more like a field point. But if any of these bows are tuned good and spine is correct, and your form and release is good, it shouldn't make much of a difference.
I used spitfires on several deer with compounds. On less than perfect shots where I might touch the shoulder, I usually bust thru it, but it damaged the mech head. Once broke it off.
I wouldn't dare use a mech on a traditional. I mean my compounds are kicking out 400gr arrows at 270fps, my longbow is pushing 500gr cedars at 182fps. Big difference. In fact I went with a two blade for penetration.